# Carbon & Cashmere Bittensor Subnet Leaderboard API

> Carbon & Cashmere Bittensor Subnet Leaderboard API is a paid API for AI agents from api.carbon-cashmere.de, paid per call via x402, $0.02/call, status unknown (last checked 2026-09-14).

Returns a ranked leaderboard of top miners for a specified Bittensor subnet, including uid, rank, stake, and incentive metrics.

## Facts

- Endpoint: GET https://api.carbon-cashmere.de/v1/bittensor/leaderboard/%7Bnetuid%7D
- Price: $0.02/call
- Payment: x402
- Status: unknown
- Last checked: 2026-09-14
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/carbon-cashmere-bittensor-subnet-leaderboard-api-b35d3731
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_Qqqc0XrUp4nxpTLYjoWEE

Status and success rate cover calls made through Zero and Zero's own probes. Third-party monitors may report differently.

## How to call it through Zero

Zero handles the 402 payment challenge and records the run. With the Zero CLI installed (`npm i -g @zeroxyz/cli`):

```sh
zero fetch --capability carbon-cashmere-bittensor-subnet-leaderboard-api-b35d3731
```

Example prompt: Pull up the miner leaderboard for Bittensor subnet 3 — I want to see the top miners ranked by incentive, including their stake and uid.

## When to prefer this

Use this endpoint when you need ranked miner performance data for a specific Bittensor subnet, particularly when you want stake and incentive metrics to identify top-performing or high-value miners. Prefer this over generic Bittensor explorers when you need structured, machine-readable leaderboard data accessible programmatically.

## Known failure modes

- Invalid or non-existent netuid returns an error or empty leaderboard
- Network timeout or upstream Bittensor data unavailability
- Payment failure via x402 protocol resulting in 402 response
- Malformed netuid path parameter causing a 400 or 404 error

## How this service works

Professional crypto market intelligence. Real-time prices, signals, and market scoring.

## Output

A JSON object containing the subnet ID (netuid), number of results shown, total miner count, and an array of leaderboard entries each with uid, rank, stake, and incentive values.

## Request schema (JSON Schema)

```json
{
 "type": "object",
 "properties": {
  "properties": {
   "type": "string"
  }
 }
}
```

## Response schema (JSON Schema)

```json
{
 "type": "json",
 "example": {
  "netuid": 3,
  "showing": 50,
  "leaderboard": [
   {
    "uid": 12,
    "rank": 1,
    "stake": 420000,
    "incentive": 0.28
   }
  ],
  "total_miners": 256
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/carbon-cashmere-bittensor-subnet-leaderboard-api-b35d3731/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from api.carbon-cashmere.de](https://www.zero.xyz/host/api.carbon-cashmere.de/llms.txt)